Rapid Determination of 21 Chinese Domestically Registered Pesticides in Ginseng Using Cleanup Based on Zirconium-Oxide-Modified Silica and Ultrahigh-Performance Liquid Chromatography-Tandem Mass Spectrometry
Table 2
Calibration information, matrix effects (ME), limits of quantitation (LOQs), and maximum residue limits (MRLs) of 21 pesticides in ginseng matrix.
Compound
Equation
r
ME (%)
LOQ (mg kg−1)
MRL (mg kg−1)
EU
China
Azoxystrobin
y = 122905x + 35549
0.9979
10
0.02
0.3a
1a
y = 135490x + 70269
0.9972
Carbendazim
y = 126295x – 3796
0.9969
−28
0.02
0.1a
N.R.
y = 91175x + 125830
0.9962
Cymoxanil
y = 4741x + 5359
0.9970
−1
0.05
0.1a
N.R.
y = 4704x + 8772
0.9932
Cyprodinil
y = 48499x − 2204
0.9968
−31
0.02
1.5a
N.R.
y = 33292x + 32686
0.9979
Diethofencarb
y = 4691x + 6462
0.9943
38
0.05
0.05a
N.R.
y = 6467x + 2852
0.9944
Difenoconazole
y = 26113x + 14194
0.9945
21
0.02
20a
0.5a
y = 31479x + 3037
0.9914
Dimethomorph
y = 30402x – 2996
0.9987
−2
0.02
0.05a
N.R.
y = 29790x + 30642
0.9951
Fluazinam
y = 4004x – 2173
0.9985
−18
0.05
3a
N.R.
y = 3287x + 1314
0.9991
Fludioxonil
y = 3978x – 534
0.9993
48
0.05
4a
N.R.
y = 5875x – 1323
0.9919
Flumorph
y = 44444x – 4398
0.9959
−6
0.02
N.R.
N.R.
y = 41813x + 5597
0.9956
Fluopyram
y = 42750x + 28644
0.9967
−7
0.02
2.5a
N.R.
y = 39881x + 116
0.9984
Flusilazole
y = 31210x + 193
0.9981
−13
0.02
0.05a
N.R.
y = 27086x + 20576
0.9911
Kresoxim-methyl
y = 2996x + 7992
0.9965
−28
0.05
0.05a
0.1a
y = 2145x + 1515
0.9978
Mandipropamid
y = 31836x + 17122
0.9947
7
0.02
0.05a
N.R.
y = 34092x + 4007
0.9989
Metalaxyl
y = 76772 + 32284
0.9995
−4
0.02
0.05a
N.R.
y = 73816x + 21041
0.9990
Propamocarb
y = 17791x + 422
0.9943
−60
0.05
0.05a
N.R.
y = 7060x + 422
0.9943
Propiconazole
y = 11509x – 1167
0.9994
38
0.02
0.05a
0.1a
y = 15842x – 4597
0.9957
Pyraoxystrobin
y = 157075x + 14500
0.9905
−14
0.02
N.R.
N.R.
y = 134897x + 30881
0.9924
Pyrimethanil
y = 30413 + 14032
0.9996
−32
0.02
1.5a
1.5a
y = 20662x + 15146
0.9987
Thiamethoxam
y = 3549x + 2249
0.9916
35
0.05
0.05a
N.R.
y = 4781x + 2518
0.9950
Trifloxystrobin
y = 21050x + 21118
0.9916
−12
0.02
0.05a
N.R.
y = 18442x + 12744
0.9987
aResidue definition of the pesticide is specified to be the parent compound only. N.R.: not regulated, linear equations of pure standard calibration curves of pesticides, and linear equations of matched-matrix standard calibration curves of pesticides.
